770Guy

I just got back from GMMG, where I had one of their pre-production catbacks put on. The only word to describe the sounds is DAYUUUUUUUUUM. I had their catback on my camaro at one point and loved it, and I have to say the same for this C5 exhaust.

We did a dyno before and after, mods are as listed.


Kooks longtubes
no cats
vararam intake
GMMG Catback

Those are the only mods done to the car, including some big 335s in the rear.

Before: 380rwhp 374rwtq
After: 387rwhp 384rwtq

I picked up 10 torque and 7rwhp over my allready badass zo6 catback. I was pretty damn impressed since the zo6 catback is allready a very good flowing exhaust. Im not sure on details of production and all that, I will leave it to Ron. I will say though that im 100% happy, and for all you c5 guys out there, this is definatly gonna be the exhaust to get!!! With a tune Im sure we could squeeze 400rwhp out of it, Mike was gonna tune it, but didnt get a chance to bring edit. I will try my best to get a sound clip up and my dyno graphs.

93Polo

iTrader: (5)

Good to see GMMG getting the catback out

Now put a cam in that thing. you still have a FM11 laying around?

Gamble

Yeah I've been waiting for this to finally come out. I talked to Ron a little bit' about how much longer before were able to purchase and he said should be a couple weeks? Can't wait... I had the GMMG exhaust on my SS w/ an F11 and loved it. Hope to get one here soon for Christmas. Keep us up to date!!!

-Charlie

Gamble

Would be nice to hear a soundclip

770Guy

Dont have the FM11 around anymore, but I have been thinkin about making a trip down to FMS and doing a cam swap.

niphilli

Any Pics or pricing info on the C/B?